Added compile flag of -isysroot /Developer/SDKs/MacOSX10.5.sdk to ensure that libs compiled on OS X 10.6 work on OS X 10.5. Also forced the LAPACKINCL_FLAG to point to the 10.5 version of the SDK. This is intended to address ticket  21: http://scion.duhs.duke.edu/vespa/gamma/ticket/21
Added compile flag of -isysroot /Developer/SDKs/MacOSX10.5.sdk to ensure that
libs compiled on OS X 10.6 work on OS X 10.5. Also forced the LAPACKINCL_FLAG
to point to the 10.5 version of the SDK. This is intended to address ticket 
21:
http://scion.duhs.duke.edu/vespa/gamma/ticket/21


Although the Makefile has changed, I'm not going to commit new binaries 
until we figure out whether or not this actually fixes the problem 
described in the ticket. All I can confirm now is that it doesn't affect
operation under OSX 10.6.




tesch1/GAMMA,tesch1/GAMMA,tesch1/GAMMA,tesch1/GAMMA,tesch1/GAMMA